Add Python 3.12 to test matrix (#4084)

.github/workflows/tox.yml

@@ -29,7 +29,7 @@ jobs:
         uses: coactions/dynamic-matrix@v1
         with:
           min_python: "3.9"
-          max_python: "3.11"
+          max_python: "3.12"
           other_names: |
             lint
             docs

pyproject.toml

@@ -29,6 +29,7 @@ classifiers = [
   "Programming Language :: Python :: 3.9",
   "Programming Language :: Python :: 3.10",
   "Programming Language :: Python :: 3.11",
+  "Programming Language :: Python :: 3.12",
   "Programming Language :: Python",
   "Topic :: System :: Systems Administration",
   "Topic :: Software Development :: Bug Tracking",

test/a_unit/command/test_base.py

@@ -72,11 +72,6 @@ def _patched_execute_scenario(mocker):
     return mocker.patch("molecule.command.base.execute_scenario")
 
 
-@pytest.fixture()
-def _patched_print_matrix(mocker):
-    return mocker.patch("molecule.scenarios.Scenarios.print_matrix")
-
-
 @pytest.fixture()
 def _patched_prune(mocker):
     return mocker.patch("molecule.scenario.Scenario.prune")
@@ -111,20 +106,16 @@ def test_command_setup(
 
 def test_execute_cmdline_scenarios(
     config_instance: config.Config,
-    _patched_print_matrix,
     _patched_execute_scenario,
 ):
     # Ensure execute_cmdline_scenarios runs normally:
-    # - scenarios.print_matrix is called, which also indicates Scenarios
-    #   was instantiated correctly
     # - execute_scenario is called once, indicating the function correctly
     #   loops over Scenarios.
     scenario_name = None
     args: dict[str, str] = {}
     command_args = {"destroy": "always", "subcommand": "test"}
     base.execute_cmdline_scenarios(scenario_name, args, command_args)
 
-    assert _patched_print_matrix.called_once_with()
     assert _patched_execute_scenario.call_count == 1